Julian and Philip,
Both of you helped with the clarifications, but I need to be more specific with my questions.
Regarding the controlled vocabulary, it's excellent that it's possible to use the public API. Implementing this feature in the metadata is something for the future in my facilities, but it hasn't been a requirement yet.
Using ORCID as a form of authentication is something I've been doing for some time, and I find the possibility of converting local accounts to access via ORCID credentials very interesting. Again, this is possible with the public API, as I can see the researchers' data when they register on Dataverse, but as an ORCID member, it would be possible to have complete information. It's not impactful, as the information can be entered manually.
The million-dollar question is: what other benefits would I have in Dataverse if I were a member? This question arose because in DSpace, when you're an ORCID member, you can push biographical data to ORCID, push publications to ORCID (Works), and push projects to ORCID (funding).
In summary, there are no unique features in Dataverse that require ORCID membership. Is that correct?
Thank you very much, and I hope to be able to attend the events in person someday and talk to you all.